TWI790450B - Smart contract on-chain method and system - Google Patents

Abstract

A method for chaining a smart contract, executed by a server, comprising the following steps: (A) After receiving a chain-up data from a client, the chain-up data includes a block chain address, a smart contract, a The target block chain type, and a smart contract parameter set corresponding to the smart contract, convert the smart contract parameter set according to the target block chain type to generate a conversion parameter set; (B) transmit the conversion parameter set to an offline signature machine, so that the offline signature machine generates a signature parameter set according to the conversion parameter set and returns the signature parameter set to the server; and (C) according to the target block chain type, the block chain The address, the smart contract, and the signature parameter set are sent to the blockchain system. In addition, the present invention also provides a smart contract chaining system.

Description

Smart contract on-chain method and system

The present invention relates to a chaining method, in particular to a smart contract chaining method and its system.

Blockchain (Blockchain) technology is a decentralized management technology that does not rely on third parties and stores, verifies, transmits and communicates network data through its own distributed nodes. Each block contains the encrypted hash of the previous block, the corresponding time stamp and transaction data. This design makes the content of the block difficult to tamper with. The distributed ledger connected by blockchain technology allows two parties to effectively record the transaction and permanently verify the transaction.

A computer program that automatically executes the terms of a contract on the blockchain is called a smart contract. The operation mode of the smart contract is that as long as the participants reach an agreement with each other, the assets and contract content codes can be put into the blocks of the blockchain (that is, on the chain), and the nodes in the blockchain platform are copied and shared multiple times. Transmitted, these transactions are traceable and irreversible.

However, different business cooperations prefer different types of blockchains, and different blockchains have different operation methods. It is necessary to develop different chaining methods for smart contracts of different types of blockchains, which makes the development cost too high.

Therefore, the purpose of the present invention is to provide a smart contract chaining method that can save development costs.

Therefore, the smart contract chaining method of the present invention is executed by a server, the server is electrically connected to an offline signature machine and a block chain system, and is connected to a client through a communication network, and the block chain chaining method includes A step (A), a step (B), and a step (C).

In this step (A), after receiving an uplink data from the client, the uplink data includes a blockchain address, a smart contract, a target blockchain type, and a corresponding smart contract A smart contract parameter set, the server converts the smart contract parameter set according to the target blockchain type to generate a conversion parameter set.

In the step (B), the server sends the conversion parameter set to the offline signature machine, so that the offline signature machine generates a signature parameter set according to the conversion parameter set and returns the signature parameter set to the server.

In the step (C), the server sends the blockchain address, the smart contract, and the signature parameter set to the blockchain system according to the target blockchain type.

Another purpose of the present invention is to provide a smart contract on-chain system that can save development costs.

Therefore, the smart contract on-chain system of the present invention includes an offline signature machine, a blockchain system, a client, and a server.

The client is connected to a communication network to generate an uplink data, the uplink data includes a blockchain address, a smart contract, a target blockchain type, and a smart contract parameter set corresponding to the smart contract .

The server is connected to the client through the communication network, and is electrically connected to the offline signature machine and the block chain system.

Wherein, the client transmits the uplink data to the server through the communication network, and the server converts the smart contract parameter set according to the target blockchain type of the uplink data to generate a conversion parameter set , and send the conversion parameter set to the offline signature machine, the offline signature machine generates a signature parameter set according to the conversion parameter set and returns the signature parameter set to the server, and the server according to the target blockchain type , and transmit the blockchain address, the smart contract, and the signature parameter group to the blockchain system.

The effect of the present invention is: the server converts the smart contract parameter set according to the target blockchain type, and according to the target blockchain type, the blockchain address, the smart contract, and the The signature parameter group is sent to the blockchain system for uploading to the chain. There is no need to develop different chaining methods for smart contracts of different blockchain types, which saves development costs.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numerals.

Referring to FIG. 1 , an embodiment of the smart contract on-chain system of the present invention is illustrated, including a server 11 , an offline signature machine 12 , a blockchain system 13 , and a client 14 . The server 11 stores a plurality of Application Programming Interfaces (Application Programming Interface, API) corresponding to multiple blockchain types, and the server 11 is electrically connected to an offline signature machine 12 and a blockchain system 13, and through a communication network The road 100 is connected to a client 14 . It is worth noting that in this embodiment, the block chain based on the Ethereum Virtual Machine (Ethereum Virtual Machine, EVM) is mainly used. These types of block chains include, for example, Quorum type and Besu type. 14 is, for example, a smart electronic device or a computer, and the offline signature machine 12 is, for example, a Vault signature machine, but not limited thereto.

Referring to Figures 1 and 2, the steps included in an embodiment of the smart contract chaining method of the present invention will be described below.

In step 201, the client 14 sends an uplink data to the server 11 via the communication network 100, wherein the uplink data includes a blockchain address, a smart contract, a target blockchain type, and A pair of smart contract parameter groups corresponding to the smart contract. It should be noted that, in this embodiment, the target blockchain type is specified by a user of the client 14, and the smart contract parameter set is provided by the user according to the smart contract, and the communication network 100 is, for example, the Internet (Internet), but not limited thereto.

In step 202, the server 11 converts the smart contract parameter set according to the target blockchain type to generate a converted parameter set. It should be especially noted that the conversion parameter group is binary code.

In step 203 , the server 11 sends the conversion parameter set to the offline signature machine 12 .

In step 204 , the offline signature machine 12 generates a signature parameter set according to the conversion parameter set, and returns the signature parameter set to the server 11 . It should be noted that, in this embodiment, the offline signature machine 12 generates a private key, and encrypts the conversion parameter set with the private key to generate the signature parameter set, but not limited thereto.

In step 205, the server 11 obtains at least one target API of the target blockchain type from the APIs according to the target blockchain type. It should be noted that in this embodiment, the target APIs corresponding to the Quorum type are, for example, eth_sendRawTransaction and eth_sendRawPrivateTransaction, and the target APIs corresponding to the Besu type are, for example, eea_sendRawTransaction, but not limited thereto.

In step 206, the server 11 transmits the blockchain address, the smart contract, and the signature parameter set to the blockchain system 13 using the at least one target API.

In step 207 , the blockchain system 13 stores the smart contract and the signature parameter set according to the blockchain address, and generates and sends an upload result to the server 11 .

In step 208 , the server 11 sends the uplink result to the client 14 via the communication network 100 .

In step 209 , the client 14 receives the uplink result via the communication network 100 .

To sum up, the smart contract chaining method and system of the present invention uses the server 11 to convert the smart contract parameter set according to the target blockchain type, and obtain the at least A target application program interface, and then use the at least one target application program interface to transmit the blockchain address, the smart contract, and the signature parameter set to the blockchain system 13 for on-chain, without targeting different Blockchain-type smart contracts develop different chaining methods to achieve the effect of saving development costs, so the purpose of the present invention can indeed be achieved.

But the above-mentioned ones are only embodiments of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by the patent of the present invention.

11:Server 12: Offline signature machine 13: Blockchain system 14: client 100: Communication network 201~209: Steps

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein: Fig. 1 is a block diagram illustrating an embodiment of the smart contract on-chain system of the present invention; and Fig. 2 is a flowchart illustrating an embodiment of the smart contract chaining method of the present invention.

11:Server

12: Offline signature machine

13: Blockchain system

14: client

100: Communication network

Claims (8)

A smart contract chaining method is executed by a server, the server is electrically connected to an offline signature machine and a block chain system, and is connected to a client through a communication network, the block chain chaining method includes the following steps: (A) After receiving an uplink data from the client, through the server, the uplink data includes a blockchain address, a smart contract, a target blockchain type, and a corresponding smart The smart contract parameter set of the contract, which is converted according to the target blockchain type of the uploaded data, to generate a conversion parameter set; (B) Send the conversion parameter set to the offline signature machine through the server, so that the offline signature machine generates a signature parameter set according to the conversion parameter set and returns the signature parameter set to the server; and (C) using the server to transmit the blockchain address, the smart contract, and the signature parameter set to the blockchain system according to the target blockchain type. According to the smart contract chaining method described in claim 1, the server stores a plurality of application programming interfaces corresponding to multiple types of blockchains, and the following steps are also included between step (B) and step (C): (D) obtaining, by the server, at least one target API of the target blockchain type from the APIs according to the target blockchain type; Wherein in step (C), the server uses the at least one target API to transmit the blockchain address, the smart contract, and the signature parameter set to the blockchain system. The smart contract on-chain method described in claim 1 further includes the following steps after step (C): (E) receiving an uplink result from the blockchain system by the server, and sending the uplink result to the client. The smart contract chaining method described in Claim 1, wherein, in step (A), the conversion parameter group is a binary code. A smart contract on-chain system, including: an offline signature machine; A blockchain system; A client, connected to a communication network, to generate an uplink data, the uplink data includes a blockchain address, a smart contract, a target blockchain type, and smart contract parameters corresponding to the smart contract Group; A server, connected to the client via the communication network, and electrically connected to the offline signature machine and the blockchain system; Wherein, the client transmits the uplink data to the server through the communication network, and the server converts the smart contract parameter set according to the target blockchain type of the uplink data to generate a conversion parameter set , and send the conversion parameter set to the offline signature machine, the offline signature machine generates a signature parameter set according to the conversion parameter set and returns the signature parameter set to the server, and the server according to the target blockchain type , and transmit the blockchain address, the smart contract, and the signature parameter group to the blockchain system. The smart contract on-chain system as described in claim 5, wherein the server obtains at least one target API of the target blockchain type from the APIs according to the target blockchain type, and The server transmits the blockchain address, the smart contract, and the signature parameter set to the blockchain system by using the at least one target API. The smart contract chaining system described in Claim 5, wherein the server receives a chaining result from the blockchain system, and transmits the chaining result to the client. The smart contract on-chain system described in claim item 5, wherein the conversion parameter group is a binary code.

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